Connector and vehicle charging device

Abstract

This utility model relates to the field of connector technology, and more particularly to a connector and a vehicle charging device. The connector includes a socket and a plug. The plug includes a plug housing and plug terminals. The plug housing has a mating side along its insertion direction, and the mating side has a mating hole extending along its insertion direction. The plug terminal has a first conductive end extending into the mating hole, and the first conductive end has a first conductive surface. The socket includes a socket housing and socket terminals. The socket housing has a mating post on the side facing the mating side, and the mating post has a mating surface on the side facing the plug. The socket terminal has a second conductive end mounted on the mating surface, and the second conductive end has a second conductive surface. The mating post and the mating hole engage when the plug and socket are plugged in, so that the first conductive surface and the second conductive surface make conductive contact. The first conductive end and the second conductive end are connected by bolts after the plug and socket are plugged in. This improves the current carrying capacity between the plug terminals and the socket terminals and reduces temperature rise.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a connector and a vehicle charging device. Background Technology

[0002] The charging device for new energy vehicles includes a socket installed on the vehicle body and a charging pile installed in the outside. The charging pile is equipped with a plug, and the plug and socket form a connector. By plugging the plug into the socket, the new energy vehicle can be charged.

[0003] An existing connector includes a socket and a plug. The socket includes a socket housing, socket terminals, and a socket cable. One end of the socket terminals extends into the socket housing and connects to the socket cable. The socket cable extends out of the socket housing for connection to a vehicle. The other end of the socket terminals is exposed outside the socket housing and has a socket hole with a spring inside. The plug includes a plug housing, plug terminals, and a plug cable. One end of the plug terminals extends into the plug housing and connects to the plug cable. The plug cable extends out of the plug housing for connection to a charging station. The other end of the plug terminals is exposed outside the housing and is used to engage with the socket hole of the socket terminals, so that the plug terminals and the spring inside the socket make conductive contact, thereby achieving a conductive connection between the socket and the plug.

[0004] However, in existing connectors, the elastic stress of the springs weakens after aging, resulting in a reduced current-carrying capacity between the springs and the plug terminals, and a higher temperature rise. Summary of the Invention

[0005] This utility model provides a connector designed to address the problem in existing connectors and vehicle charging devices where the elastic stress of the springs weakens after aging, resulting in reduced current carrying capacity and higher temperature rise between the springs and plug terminals.

[0006] To solve the above problems, this utility model provides a connector, including a socket and a plug. The plug includes a plug housing and a plug terminal. The plug housing has a mating side along its insertion direction. The mating side is provided with a mating hole extending along its insertion direction. The plug terminal has a first conductive end that extends into the mating hole. The side of the first conductive end facing the socket has a first conductive surface.

[0007] The socket includes a socket housing and socket terminals. The socket housing has a mating post on the side facing the mating side, and the mating post has a mating surface on the side facing the plug. The socket terminals have a second conductive end, which is mounted on the mating surface. The second conductive end has a second conductive surface on the side facing the plug.

[0008] The pin and the hole are engaged when the plug and the socket are connected, so that the first conductive surface and the second conductive surface make conductive contact. The first conductive end and the second conductive end are connected by bolts after the plug and the socket are connected.

[0009] Optionally, the first conductive end is plate-shaped, the second conductive end is plate-shaped, the first conductive end is provided with a first mounting hole, the second conductive end is provided with a second mounting hole, and the first mounting hole and the second mounting hole are bolted together.

[0010] Optionally, the mating surface is provided with a mounting groove, the second conductive end is installed in the mounting groove, and the side of the second conductive end contacts the side wall of the mounting groove.

[0011] Optionally, the bottom wall of the mounting groove is provided with a third mounting hole for screwing in the bolt.

[0012] Optionally, the socket further includes a nut sleeve, which passes through the third mounting hole and is connected to the bolt.

[0013] Optionally, the second conductive surface is flush with the mating surface.

[0014] Optionally, the plug housing has an installation side along its insertion direction, the installation side is disposed opposite to the mating side, the installation side has a clearance opening communicating with the mating hole, and the bolt enters the mating hole through the clearance opening.

[0015] Optionally, the plug may further include a top cover, which is detachably connected to the plug housing to block the clearance opening.

[0016] Optionally, a locking block is provided on the outer peripheral surface of the plug housing, and a connecting arm extending along the insertion direction of the plug housing is provided on the upper cover. A locking hole is provided at the end of the connecting arm away from the upper cover, and the locking block engages with the locking hole.

[0017] According to the connector provided in this embodiment of the present invention, the first conductive end and the second conductive end are connected together by bolts after the plug and socket are inserted, so that the first conductive surface and the second conductive surface are in contact, thereby realizing the conductive connection between the plug terminal and the socket terminal. Compared with the prior art, there is no need to set a spring, which improves the current carrying capacity between the plug terminal and the socket terminal and reduces the temperature rise.

[0018] This utility model embodiment also provides a vehicle charging device, including a charging pile and the aforementioned connector, wherein the plug terminal is electrically connected to the charging pile. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the connector structure provided in one embodiment of the present invention. Figure 1 ;

[0021] Figure 2 for Figure 1 A schematic diagram of the middle plug structure;

[0022] Figure 3 for Figure 2 An explosion diagram;

[0023] Figure 4 for Figure 3 Schematic diagram of the middle plug housing;

[0024] Figure 5 for Figure 4 Another perspective;

[0025] Figure 6 for Figure 1 A schematic diagram of the structure of the middle socket;

[0026] Figure 7 for Figure 6 A schematic diagram of the structure of the socket housing.

[0027] Instruction manual drawing reference numerals: 1. Plug; 2. Socket; 3. Plug housing; 4. Bolt; 5. Plug cable; 6. Plug terminal; 7. First conductive end; 8. First connecting end; 9. Top cover; 10. Sealing plate; 11. Connecting arm; 12. Locking hole; 13. Sealing ring; 14. Plug-in sealing ring; 15. Interlocking hole; 16. Limiting structure; 17. Upper baffle; 18. Lower baffle; 19. Limiting step; 20. Limiting groove; 21. Guide plate; 22. Guide groove; 23. Locking block; 24. Socket housing; 25. Socket terminal; 26. Second conductive end; 27. Second connecting end; 28. First conductive surface; 29. ​​First mounting hole; 30. Second conductive surface; 31. Second mounting hole; 32. Mating post; 33. Mating surface; 34. Mounting groove; 35. Third mounting hole; 36. Limiting plate; 37. Nut sleeve; 38. Through hole; 39. Clearance opening. Detailed Implementation

[0028] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] like Figures 1 to 7 As shown, one embodiment of the present invention provides a connector, including a socket 2 and a plug 1. The plug 1 includes a plug housing 3 and a plug terminal 6. The plug housing 3 has a mating side along its insertion direction. The mating side is provided with a mating hole 15 extending along its insertion direction. The plug terminal 6 has a first conductive end 7. The first conductive end 7 extends into the mating hole 15. The side of the first conductive end 7 facing the socket 2 has a first conductive surface 28.

[0031] The socket 2 includes a socket housing 24 and a socket terminal 25. The socket housing 24 has a mating post 32 on the side facing the mating side. The mating post 32 has a mating surface 33 on the side facing the plug 1. The socket terminal 25 has a second conductive end 26, which is mounted on the mating surface 33. The second conductive end 26 has a second conductive surface 30 on the side facing the plug 1.

[0032] The plug pin 32 and the plug hole 15 are engaged when the plug 1 and the socket 2 are plugged in, so that the first conductive surface 28 and the second conductive surface 30 make conductive contact. The first conductive end 7 and the second conductive end 26 are connected by bolt 4 after the plug 1 and the socket 2 are plugged in.

[0033] In this embodiment, the first conductive end 7 and the second conductive end 26 are connected together by bolts 4 after the plug 1 and the socket 2 are plugged in, so that the first conductive surface 28 and the second conductive surface 30 are in contact, thereby realizing the conductive connection between the plug terminal 6 and the socket terminal 25. Compared with the prior art, there is no need to set a spring, which improves the current carrying capacity between the plug terminal 6 and the socket terminal 25 and reduces the temperature rise.

[0034] In this embodiment, the socket 2 also includes a socket 2 cable, the plug terminal 6 also includes a first connecting end 8, and the plug housing 3 is also provided with an installation cavity communicating with the plug hole 15. The first connecting end 8 is installed in the installation cavity, one end of the first connecting end 8 is connected to the first conductive end 7, and the other end of the first connecting end 8 is connected to the plug cable 5. The end of the plug cable 5 away from the first connecting end 8 is exposed outside the plug housing 3 for electrical connection with the charging pile.

[0035] In this embodiment, the first connecting end 8 and the plug cable 5 are fixedly connected by welding.

[0036] In this embodiment, the plug terminal 6 is in the shape of an "I".

[0037] In this embodiment, the socket 2 also includes a socket 2 cable, and the socket terminal 25 also includes a second connection end 27. The second connection end 27 is exposed outside the socket housing 24. One end of the second connection end 27 is connected to the second conductive end 26, and the other end of the second connection end 27 is connected to the socket 2 cable. The end of the socket 2 cable away from the first connection end 8 is used to connect to the battery in the vehicle.

[0038] In this embodiment, the second connection end 27 is fixedly connected to the cable of the socket 2 by welding.

[0039] In this embodiment, the socket terminal 25 is L-shaped, and the second conductive end 26 and the second connecting end 27 are perpendicular to each other.

[0040] In one embodiment, the first conductive end 7 is plate-shaped, the second conductive end 26 is plate-shaped, the first conductive end 7 is provided with a first mounting hole 29, the second conductive end 26 is provided with a second mounting hole 31, and the first mounting hole 29 and the second mounting hole 31 are connected by a bolt 4.

[0041] In this embodiment, the plug terminal 6 is plate-shaped.

[0042] In this embodiment, a limiting structure 16 is provided inside the socket 15. The limiting structure 16 can limit the first conductive end 7 in the insertion direction of the plug housing 3.

[0043] In this embodiment, the limiting structure 16 includes an upper baffle 17 and a lower baffle 18 disposed on the inner wall of the insertion hole 15. The upper baffle 17 and the lower baffle 18 are spaced apart along the insertion direction of the socket housing 24. The gap between the upper baffle 17 and the lower baffle 18 is used for the installation of the first conductive end 7. The side of the first conductive end 7 facing the socket 2 makes contact with the side of the lower baffle 18 facing away from the socket 2, and the side of the first conductive end 7 facing away from the socket 2 makes contact with the side of the upper baffle 17 facing the socket 2. This can limit the first conductive end 7 in the insertion direction of the plug housing 3, preventing the first conductive end 7 from shaking.

[0044] In this embodiment, the mounting cavity has a mounting port provided on the plug housing 3. The mounting port communicates with the mounting cavity. During installation, the plug terminal 6 extends into the mounting cavity through the mounting port along the first mounting direction, and then extends into the mating hole 15 through the mounting cavity. The first mounting direction is perpendicular to the insertion direction of the plug housing 3.

[0045] In this embodiment, the socket terminal 25 is plate-shaped, and the socket housing 24 is provided with a through hole 38. The second connecting end 27 passes through the through hole 38 so that the second conductive end 26 is installed on the mating surface 33.

[0046] In one embodiment, the insertion surface 33 is provided with a mounting groove 34, and the second conductive end 26 is installed in the mounting groove 34, with the side of the second conductive end 26 contacting the side wall of the mounting groove 34.

[0047] In this embodiment, the second conductive end 26 is installed in the mounting groove 34, and the side wall of the mounting groove 34 can limit the second conductive end 26 to prevent the second conductive end 26 from shaking.

[0048] In this embodiment, the perforation 38 penetrates the bottom wall of the mounting groove 34. During installation, the second connecting end 27 is inserted into the perforation 38, so that the second connecting end 27 passes through the socket housing 24 from the side away from the plug 1, and the second conductive end 26 enters the mounting groove 34.

[0049] In this embodiment, a limiting plate 36 is provided on the insertion surface 33. The limiting plate 36 is arranged around the mounting groove 34. The side of the limiting plate 36 facing the second conductive end 26 is flush with the side wall of the mounting groove 34. The limiting plate 36 improves the limiting ability of the mounting groove 34 to the second conductive end 26.

[0050] In this embodiment, the second conductive surface 30 is flush with the side of the limiting plate 36 facing the plug 1.

[0051] In this embodiment, the socket terminal 25 is a metal part, the socket housing 24 is a plastic part, and the socket housing 24 is fixed to the socket terminal 25 by injection molding.

[0052] In one embodiment, the bottom wall of the mounting groove 34 is provided with a third mounting hole 35 for screwing in the bolt 4.

[0053] In this embodiment, the third mounting hole 35 is provided on the bottom wall of the mounting groove 34, and the third mounting hole 35 is directly opposite the second mounting hole 31. The bolt 4 is threadedly connected to the third mounting hole 35. It is not necessary to provide internal threads on the inner wall of the first mounting hole 29 and the inner wall of the second mounting hole 31, which facilitates design and manufacturing and reduces the wear of the first conductive end 7 and the second conductive end 26.

[0054] In one embodiment, the socket 2 further includes a nut sleeve 37, which passes through a third mounting hole 35 and is connected to a bolt 4.

[0055] In this embodiment, the nut sleeve 37 passes through the third mounting hole 35, and the bolt 4 is screwed into the nut sleeve 37. There is no need to provide threads in the third mounting hole 35, which simplifies the design.

[0056] In this embodiment, the outer peripheral surface of the nut sleeve 37 is bonded and fixed to the inner wall of the third mounting hole 35. In other embodiments, the nut sleeve 37 may be interference-fitted with the third mounting hole 35.

[0057] In one embodiment, the plug housing 3 has an installation side along its insertion direction, the installation side is arranged opposite to the mating side, and the installation side has a clearance opening 39 communicating with the mating hole 15, through which the bolt 4 enters the mating hole 15.

[0058] In this embodiment, the clearance opening 39 is provided on the mounting side. During installation, the bolt 4 enters the mating hole 15 through the clearance opening 39 to connect to the third mounting hole 35, thereby pressing the first conductive end 7 and the second conductive end 26, so that the first conductive surface 28 and the second conductive surface 30 make conductive contact. The clearance opening 39 facilitates the installation of the bolt 4.

[0059] In one embodiment, the plug 1 further includes an upper cover 9, which is detachably connected to the plug housing 3 to block the clearance opening 39.

[0060] In this embodiment, the top cover 9 can be plugged into the plug 1 and socket 2, and after the bolt 4 is installed, it can seal the clearance opening 39 to prevent external debris from entering the socket 15.

[0061] In one embodiment, a locking block 23 is provided on the outer peripheral surface of the plug housing 3, and a connecting arm 11 extending along the insertion direction of the plug housing 3 is provided on the upper cover 9. A locking hole 12 is provided at one end of the connecting arm 11 away from the upper cover 9, and the locking block 23 engages with the locking hole 12.

[0062] In this embodiment, a limiting step 19 is provided on the inner wall of the socket 15. The limiting step 19 is close to the clearance opening 39. The side of the limiting step 19 facing away from the socket 2 and the inner wall of the socket 15 form a limiting groove 20. The upper cover 9 is inserted into the socket 15. A sealing plate 10 is provided at the end of the upper cover 9 away from the socket 2. The sealing plate is installed in the limiting groove 20. The limiting groove 20 can limit the upper cover 9 to prevent the upper cover 9 from shaking. It can also form a foolproof design to facilitate the engagement of the locking block 23 with the locking hole 12.

[0063] In this embodiment, the connecting arm 11 is connected to the edge of the sealing plate 10.

[0064] In this embodiment, a guide plate 21 is provided on the outer surface of the plug housing 3. The guide plate 21 extends along the insertion direction of the plug housing 3. Two guide plates 21 are spaced apart, and the gap between the two guide plates 21 forms a guide groove 22. The connecting arm 11 is installed in the guide groove 22, which can limit the connecting arm 11 and prevent the connecting arm 11 from shaking.

[0065] In this embodiment, the locking block 23 is disposed within the limiting groove 20. The guide groove 22 also serves to guide the connecting arm 11 during the installation of the upper cover 9, facilitating the engagement of the connecting arm 11 with the locking block 23.

[0066] In this embodiment, a sealing ring 13 is also provided inside the insertion hole 15. The sealing ring 13 is close to the relief opening 39, and the outer peripheral surface of the sealing ring 13 is bonded and fixed to the inner wall of the insertion hole 15. The sealing ring 13 achieves a sealed assembly between the upper cover 9 and the insertion hole 15.

[0067] In this embodiment, a mating sealing ring 14 is also provided inside the insertion hole 15, and the outer peripheral surface of the mating sealing ring 14 is bonded and fixed to the inner wall of the insertion hole 15.

[0068] In this embodiment, after the plug 1 and the socket 2 are plugged in, the outer peripheral surface of the plug pin is in sealing contact with the inner surface of the mating sealing ring 14, thereby achieving a seal between the plug pin and the mating hole 15.

[0069] In this embodiment, a cable sealing ring is provided inside the mounting cavity. The outer circumferential surface of the cable sealing ring is in sealing contact with the inner wall of the mounting cavity, and the plug cable 5 passes through the cable sealing ring.

[0070] In this embodiment, the plug housing 3 is also provided with a tail clip, through which the plug cable 5 passes, and the tail clip is used to limit the plug cable 5.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] According to the connector provided in this embodiment of the present invention, the first conductive end 7 and the second conductive end 26 are connected together by bolts 4 after the plug 1 and the socket 2 are plugged in, so that the first conductive surface 28 and the second conductive surface 30 are in contact, thereby realizing the conductive connection between the plug terminal 6 and the socket terminal 25. Compared with the prior art, there is no need to set a spring, which improves the current carrying capacity between the plug terminal 6 and the socket terminal 25 and reduces the temperature rise.

[0073] In addition, one embodiment of this utility model also provides a vehicle charging device, including a charging pile and the aforementioned connector, wherein the plug terminal 6 is electrically connected to the charging pile. One end of the plug cable 5, which extends into the mounting cavity, is welded and fixed to the first connecting end 8 of the plug terminal 6, and the other end of the plug cable 5 extends out of the plug housing 3 and is connected to the charging pile.

[0074] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A connector characterized by comprising: The device includes a socket (2) and a plug (1). The plug (1) includes a plug housing (3) and a plug terminal (6). The plug housing (3) has a mating side along its insertion direction. The mating side is provided with a mating hole (15) extending along its insertion direction. The plug terminal (6) has a first conductive end (7). The first conductive end (7) extends into the mating hole (15). The side of the first conductive end (7) facing the socket (2) has a first conductive surface (28). The socket (2) includes a socket housing (24) and a socket terminal (25). The socket housing (24) has a mating post (32) on the side facing the mating side. The mating post (32) has a mating surface (33) on the side facing the plug (1). The socket terminal (25) has a second conductive end (26). The second conductive end (26) is mounted on the mating surface (33). The second conductive end (26) has a second conductive surface (30) on the side facing the plug (1). The plug (32) and the socket (15) are engaged when the plug (1) and the socket (2) are plugged in, so that the first conductive surface (28) and the second conductive surface (30) make conductive contact. The first conductive end (7) and the second conductive end (26) are connected by bolts (4) after the plug (1) and the socket (2) are plugged in.

2. The connector of claim 1, wherein The first conductive end (7) is plate-shaped, the second conductive end (26) is plate-shaped, the first conductive end (7) is provided with a first mounting hole (29), the second conductive end (26) is provided with a second mounting hole (31), and the first mounting hole (29) and the second mounting hole (31) are connected by a bolt (4).

3. The connector of claim 2, wherein The mating surface (33) is provided with a mounting groove (34), and the second conductive end (26) is installed in the mounting groove (34), with the side of the second conductive end (26) in contact with the side wall of the mounting groove (34).

4. The connector of claim 3, wherein The bottom wall of the mounting groove (34) is provided with a third mounting hole (35) for screwing in the bolt (4).

5. The connector of claim 4, wherein, The socket (2) also includes a nut sleeve (37), which is inserted into the third mounting hole (35) and connected to the bolt (4).

6. The connector of claim 2, wherein The insertion hole (15) is provided with a limiting structure (16), which can limit the first conductive end (7) in the insertion direction of the plug housing (3).

7. The connector of claim 2, wherein The plug housing (3) has an installation side along its insertion direction. The installation side is arranged opposite to the mating side. The installation side has a clearance opening (39) that communicates with the mating hole (15). The bolt (4) enters the mating hole (15) through the clearance opening (39).

8. The connector of claim 7, wherein, The plug (1) also includes a top cover (9), which is detachably connected to the plug housing (3) to block the clearance opening (39).

9. The connector of claim 8, wherein, The plug housing (3) has a locking block (23) on its outer peripheral surface. The upper cover (9) has a connecting arm (11) extending along the insertion direction of the plug housing (3). The connecting arm (11) has a locking hole (12) at one end away from the upper cover (9). The locking block (23) engages with the locking hole (12).

10. A vehicle charging device, characterized by, Includes a charging pile and a connector as described in any one of claims 1 to 9, wherein the plug terminal (6) is electrically connected to the charging pile.

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